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8556608 Rotor drive mechanism and pump apparatus including the same  
A rotor drive mechanism 25 is configured to transfer rotation of a driving shaft 38 to an external screw type rotor 22 of a uniaxial eccentric screw pump 23 via a connecting shaft 39, the driving...
8556607 Screw rotor  
A screw rotor is for use in a screw pump that pumps fluid by rotation of a pair of screw rotors engaged with each other in a rotor housing. The screw rotor includes a multiple-thread portion for...
8556922 Motor assembly for a powered surgical instrument  
A surgical instrument is provided for cutting bone and other tissue. The surgical instrument is powered by a pressurized fluid and includes a rotatable shaft connected to a dissection tool. The...
8556604 Eccentric screw pump for mortar  
An apparatus for delivering a viscous material by means of an eccentric screw pump, includes a framework for carrying and fastening apparatus elements, a pump-housing portion for carrying a stator...
8556134 Cartridge-type single-screw pump and dye-meter equipped with such pump  
A cartridge-type single-screw pump (1) is provided. The pump (1) is adapted to volumetrically batch and deliver a certain amount of a fluid contained inside at least one storage tank and to supply...
8550792 Energy conversion device and method of reducing friction therein  
A device configured for converting energy includes a first surface, a second surface configured for moving with respect to the first surface during operation of the device, and a coating disposed...
8550057 Integral rotor noise attenuators  
A supercharger is provided, comprising a plurality of rotatable supercharger rotors each having a plurality of interleavable lobes configured to move air from an inlet to an outlet of the...
8550796 Variable capacity fluidic machine  
An internal gear fluidic machine, in particular a pump for the lubrication circuit of a motor vehicle engine, comprises an operating part including an external gear (2) and an internal gear (4),...
8550797 Scroll compressor with improved back pressure force control function  
A scroll compressor that includes: a housing, a drive unit configured to generate a rotating force; and a scroll compression unit having a fixed scroll having a spiral scroll wrap for compressing a...
8549896 Vane pump and evaporation leak check system using the same  
A vane pump has an upper casing, a lower casing, a rotor and a motor. First to fourth points are defined on an outer peripheral end of a lower flat surface of the lower casing. The first point is...
8545199 Regulatable vane-cell pump with a sealing web curving in an arc  
The invention relates to a vane pump (1), in particular a regulatable oil pump for a lubricating system, with a pump housing (2) with at least one housing tank (6) and with a vane rotor (11)...
8545200 Variable displacement oil pump  
Variable displacement oil pump includes a: rotor; vanes; cam ring; housing; biasing member biasing the cam ring in a direction enlarging an eccentricity between centers of the rotor and inner...
8544453 Supercharger cooling  
A supercharger cooling system provides a path for coolant from an air/coolant heat exchanger to a supercharger intercooler and loops around a hot outlet end of a screw type supercharger and back to...
8539769 Internal combustion engine and supercharger  
An internal combustion engine drivably connected to a variable displacement and variable internal compression ratio supercharger that supplies varying amounts of air to the engine air intake...
8539936 Supercharger rotor shaft seal pressure equalization  
A pressure equalization system reduces or eliminates a pressure differential across supercharger rotor shaft seals. Under high boost, rotor shaft seals often fail, allowing hot compressed air into...
8540500 High capacity lightweight compact vane motor or pump system  
A high capacity lightweight compact vane motor or pump system which utilizes vanes with extensions to improve efficiency of the system overall. The present invention generally includes a rotor...
8539930 Rotary combustion apparatus  
A combustion apparatus having a housing including an inner surface that defines at least one chamber, a rotor, a rotor shaft, an intake shaft, an exhaust shaft, and a gearing mechanism. The chamber...
8539931 Rotary internal combustion diesel engine  
A rotary internal combustion diesel engine (46) comprising: a posterior plate (78), an intermediate plate (80), and an anterior plate (82); a rotor-housing unit (46) on each side of the...
8535028 Downhole positive displacement motor  
A downhole positive displacement motor converts hydraulic fluid pressure into rotational torque. The motor includes a non-helical rotor and stator, and upper and lower valve assemblies each...
8535030 Gerotor hydraulic pump with fluid actuated vanes  
A gerotor pump having an outer rotor defining an inner surface of the outer rotor, a thrust plate, a pressure plate, an inlet chamber for fluid intake through the thrust plate to be pressurized,...
8535029 Scroll type compressor having reinforced fixed scroll  
A scroll type compressor has a rotary shaft, a fixed scroll member, a movable scroll member and a rib. The fixed scroll member has a fixed end plate and a fixed scroll wall. The fixed end plate has...
8529232 Compressor having capacity modulation system  
A compressor includes first and second scroll members, a structure supporting the second scroll member, and a first piston. The first scroll member includes a first end plate and a first spiral...
8528506 Rotary internal combustion engine  
A rotary internal combustion engine including: a cylinder having a cylinder circumferential wall provided with a horizontal valve groove on its inner circumferential surface; a working shaft...
8528518 Rotary piston for a rotary piston engine and rotary piston engine  
The invention relates to a rotary piston engine, in particular a rotary engine of trochoidal design, with a side disk (4) on the exhaust side and a rotary piston (6) with at least of one, and...
8529233 Displacement machine with improved support  
A displacement machine of spiral-type construction for a compressible medium includes a displacement body having a carrier disc and helical blades extending out from both sides of the carrier disc....
8529235 Oscillating variable displacement ring pump  
An oscillating variable displacement ring pump provides both positive and variable displacement. A housing circumscribes a pump chamber. The pump chamber encases an oscillating ring driven by a...
8528505 Rotary internal combustion engine  
A rotary internal combustion engine including: a cylinder having a cylinder circumferential wall provided with a horizontal valve groove on its inner circumferential surface; a working shaft...
8529231 Apparatus for cleaning rotation body and vacuum pump having the same  
An apparatus includes a rotation body having one or more rotary shafts having projections, and a cleaning part disposed adjacent to the projections, having one or more rotation holes into which the...
8529234 Water injection type screw fluid machine  
A water-lubrication type screw fluid machine has a first non-contact seal, a second non-contact seal and a lip seal disposed between a rotor chamber and a bearing for a rotor shaft. The bearing is...
8523548 Screw compressor having a gate rotor assembly with pressure introduction channels  
A single-screw compressor includes a casing, a screw rotor accommodated in the casing, a gate rotor, and a gate rotor supporting member rotatably supporting the gate rotor. The gate rotor includes...
8523534 High-pressure pump for supplying fuel to an internal-combustion engine  
A high-pressure pump for supplying fuel to an internal-combustion engine has a pump body and an actuating shaft which extends along a longitudinal axis and which is supported rotatably about the...
8523545 Stator to housing lock in a progressing cavity pump  
A reinforcing interface between the stator and its housing in a progressing cavity pump is created from ribs extending inwardly into the stator from the housing inner wall that can be...
8523546 Cycloid rotor engine  
A rotary engine has a cycloid rotor and a sealing grid including a face seal that rotates with the rotor, and including other seals that do not rotate with the rotor. As the rotor rotates within a...
8523544 Three stage scroll vacuum pump  
A three stage vacuum pump has three stages of fixed scrolls and orbiting scrolls that operate simultaneously. A motor drives the second orbiting scroll within the third fixed scroll upon three...
8523547 Rotary engine expansion chamber apparatus and method of operation therefor  
An engine is described for operation on a fuel expanding about adiabatically in a power stroke of the engine. To aid the power stroke efficiency, the rotary engine contains one or more of a rotor...
8523519 Steam turbine rotor and alloy therefor  
An alloy suitable for use in a rotor, such as one or more regions of a steam turbine rotor, as well as a forged rotor formed with the alloy. The alloy consists of, by weight, 0.20 to 0.30% carbon,...
8517703 Compressor including valve assembly  
A compressor hub assembly may include a hub member, a valve retainer and a valve member. The hub member may include first and second portions. The first portion may define an annular hub wall for a...
8517702 Rotary compressor with enhanced sealing between mode switching device and chamber thereof  
A rotary compressor is provided, in which an inner diameter of a connection hole connected to a vane chamber and an outer diameter of a connection tube inserted into the connection hole are...
8517708 Fuel pump with axial slide gap  
A fuel pump includes an impeller and a cover. The impeller includes a ring portion, which is annular and is placed radially outward of blades. The cover has an arcuate pump flow passage. An...
8517704 Compressor having capacity modulation system  
A compressor includes first and second scroll members, a piston and a control valve. The first scroll member includes an end plate defining a capacity modulation passage. The first and second...
8517701 Multistage vacuum pump  
A multistage vacuum pump has a pair of rotors disposed in each of pump chambers connected in stages. As the rotors rotate while intermeshing, a suctioned gas is compressed and discharged, angles of...
8517707 Method for converting energy from compressed air into mechanical energy and compressed air motor therefor  
A method for converting energy from compressed air into mechanical energy, and a compressed air motor therefor. The motor includes a shaft rotor and a counterpart rotor which intermesh with each...
8517706 Non-eccentric engine  
The present invention is an apparatus that includes a chamber rotor with a chamber and an extension rotor with an extension. The rotors are housed in a rotor case. A pressure cavity is at least...
8517705 Rotary engine vane apparatus and method of operation therefor  
A rotor engine is provided for operation with a fuel expanding during a power stroke. To aid power stroke efficiency, the rotary engine contains a vane, where a tip of the vane includes one or more...
8512016 Positive-displacement dry pump  
The present invention provides a dry pump including: a center cylinder which includes: a plurality of pump chambers containing an upper stage pump chamber that communicates with an intake port and...
8511277 “Turbomotor” rotary machine with volumetric expansion and variants thereof  
A “TurboMotor” positive displacement rotary-piston machine comprises a casing having an annular working chamber and intake and exhaust ports, two drive shafts coaxial with the annular surface def...
8512017 Compression mechanism and scroll compressor including the same  
A compression mechanism is configured to be used in a scroll compressor. The compression mechanism includes a fixed scroll and a movable scroll. One of the fixed scroll and the movable scroll is a...
8512018 Gear pump with pressure relief groove  
A hydraulic device has an inlet side and an outlet side and includes two meshing cogwheels. Each cogwheel has external oblique teeth and is arranged between an inlet side and an outlet side. At...
8512006 Hydraulic pump with variable flow and pressure and improved open-loop electric control  
The present invention is a variable displacement pump system for delivering precisely controlled oil flow and pressure, including a variable displacement pump having an inlet passage, an outlet...
8512019 Screw compression apparatus  
In a screw compression apparatus in which shaft sealing members (13, 14) isolate a bearing space (7, 8) from a rotor chamber (5) and a lubricating fluid separating collector (3) separates the rotor...